.middle {
    margin: 50px 0;
    display: flex;
    justify-content: center;

}

.middle > div {
    width: 80%;
    border: 1px solid red;

}

.middle > div > div:first-child {
    color: rgb(230, 145, 55);
    font-size: 30px;
    padding: 10px;
    border-bottom: 1px solid red;
}



.middle > div > div:nth-child(2) {
    padding: 10px;
    overflow: hidden;
}

.middle > div > div:nth-child(2) > div:first-child {
    height: 200px;
    overflow: auto;
}

.middle > div > div:nth-child(2) > div:first-child > div {
    margin: 10px 0;
    text-indent: 2em;
}

/*轮播*/
.middle > div > div:nth-child(2) > div:nth-child(2) {
    height: 320px;
    width: 300%;
    display: flex;
    justify-content: flex-start;
    margin: 50px 0 0;
    text-align: center;
    position: relative;
    animation: marginLeft linear 5s infinite normal;
    -webkit-animation: marginLeft linear 5s infinite normal;

}

@keyframes marginLeft {
    0% {
        margin-left: 0;
    }


    33.3% {
        margin-left: -600px;
    }

    62% {
        margin-left: -600px;
    }


    100% {
        margin-left: 0;
    }
}

.middle > div > div:nth-child(2) > div:nth-child(2) img {
    width: 300px;
    height: 300px;
    margin: 0 10px;
}